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Finding the Fourth Proportional to 528,100.68, 728,779.10 and 286,383.18

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Solution

The fourth proportional to 528,100.68, 728,779.10 and 286,383.18 is: 395,208.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,100.68 : 728,779.10 = 286,383.18 : x
  2. Step 2: Convert to fraction form
    528,100.68/728,779.10 = 286,383.18/x
  3. Step 3: Cross multiply
    528,100.68x = 728,779.10 × 286,383.18
  4. Step 4: Simplify right side
    528,100.68x = 208,710,074,743.62
  5. Step 5: Solve for x
    x = 208,710,074,743.62/528,100.68
  6. Step 6: Final answer
    x = 395,208.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.